(19)

(11)

EP 0 389 484 A1

(12)

(43) Date of publication: 03.10.1990 Bulletin 1990/40 (21) Application number: 88907747.0 (22) Date of filing: 26.08.1988

(51) International Patent Classification (IPC):  G06K 17/ 00( . ) G07F 7/ 10( . ) G07F 7/ 08( . ) (86) International application number: PCT/GB1988/000706 (87) International publication number: WO 1989/002140 (09.03.1989 Gazette 1989/06)

(84) Designated Contracting States: AT BE CH DE FR GB IT LI LU NL SE (30) Priority: 28.08.1987 GB 19870020332 (71) Applicant: MARS INCORPORATED McLean Virginia 22101-3883 (US)	(72) Inventors: EGLISE, David Windsor Berkshire SL4 3HH (GB) ARMOUR, James, Joseph Baydon Nr. Marlborough, Wiltshire (GB) (74) Representative: Burke, Steven David, et al  R.G.C. Jenkins & Co. 26 Caxton Street London SW1H 0RJ London SW1H 0RJ (GB)